| 摘要: |
| 首先讨论了遥感卫星高速数据中频接收解调系统的应用背景，然后介绍了一种新型多速率中频QPSK解调器的组成和工作原理，并给出了该设备的性能测试方法和测试结果。测试结果表明该解调器在280～340Mbps速率范围内均具有较好的误码率性能指标。 |
| 关键词: 遥感卫星 信息系统 调制解调器 四相移相键控 载波恢复 比特同步 |
| DOI：10.3969/j.issn.1001-893X. |
|
| 基金项目:国家863计划基金资助项目(2002AA783020) |
|
| An Up-To-340Mbps Multirate QPSK Demodulator |
|
| () |
| Abstract: |
| The applied background of high-data-rate demodulator is discussed and the composition and operation principle of a new multirate Quadrature Phase Shift Keying(QPSK) demodulator is introduced. The testing result indicates that this demodulator has better Bit Error Rate(BER) performance between 280Mbps and 340Mbps. |
| Key words: Remote sensing satellite,Information system,Modem,QPSK,Carrier resumption,Bit Synchronization, |
